# std::experimental::is_simd_flag_type

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< cpp‎ | experimental‎ | simd

Defined in header `<experimental/simd>` |  |
template< class T > struct is_simd_flag_type; |  | (parallelism TS v2)

If T is a valid type for the second argument to `copy_from`, `copy_to` or the corresponding load constructors of `simd` or `simd_mask`, provides the member constant value equal true. For any other type, value is false.

### Template parameters

T | - | a type to check

### Helper variable template

template< class T > constexpr bool is_simd_flag_type_v = is_simd_flag_type<T>::value; |  | (parallelism TS v2)

## Inherited from std::integral_constant

### Member constants

value [static] | true if T is a load/store flag tag type, false otherwise (public static member constant)

### Member functions

operator bool | converts the object to bool, returns value (public member function)
operator() (C++14) | returns value (public member function)

### Member types

Type | Definition
`value_type` | bool
`type` | std::integral_constant<bool, value>

### Example

Run this code

    #include <experimental/simd>
    #include <iostream>

    int main()
    {
        namespace stdx = std::experimental;
        std::cout << std::boolalpha
                  << stdx::is_simd_flag_type_v<stdx::element_aligned_tag> << '\n'
                  << stdx::is_simd_flag_type_v<int> << '\n';
    }

Output:

    true
    false

### See also

is_abi_tag (parallelism TS v2) | checks if a type is an ABI tag type (class template)

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